Fig. 1

Locations of four sampled populations of the moss Homalothecium lutescens. Four populations of the moss Homalothecium lutescens in southern Sweden close to the city of Malmö (55° 34.8’ N 13° 0’ E): Arrie ponds (AP), Käglinge ponds (KP), Limhamn Quarry (LQ) and Cape Klagshamn cape (CK). The dots within the squares represent the colonies sampled within each population (drawn to the same scale, square height/width 230 m). Colony numbers are equivalent to the ones used in the structure plot (Fig. 4)